EP4075152B1 - Phasengesteuerte antennenvorrichtung - Google Patents

Phasengesteuerte antennenvorrichtung Download PDF

Info

Publication number
EP4075152B1
EP4075152B1 EP20899133.1A EP20899133A EP4075152B1 EP 4075152 B1 EP4075152 B1 EP 4075152B1 EP 20899133 A EP20899133 A EP 20899133A EP 4075152 B1 EP4075152 B1 EP 4075152B1
Authority
EP
European Patent Office
Prior art keywords
antenna element
row
fft
column
converter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20899133.1A
Other languages
English (en)
French (fr)
Other versions
EP4075152A1 (de
EP4075152A4 (de
Inventor
Takashi Maeda
Naoya Tomii
Akihisa Uematsu
Kazuya INAOKA
Noriyuki Kawaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Aerospace Exploration Agency JAXA
Original Assignee
Japan Aerospace Exploration Agency JAXA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Japan Aerospace Exploration Agency JAXA filed Critical Japan Aerospace Exploration Agency JAXA
Publication of EP4075152A1 publication Critical patent/EP4075152A1/de
Publication of EP4075152A4 publication Critical patent/EP4075152A4/de
Application granted granted Critical
Publication of EP4075152B1 publication Critical patent/EP4075152B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/2682—Time delay steered arrays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
    • G01R29/0878—Sensors; antennas; probes; detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S2013/0236—Special technical features
    • G01S2013/0245—Radar with phased array antenna
    • G01S2013/0263—Passive array antenna
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/02—Waveguide horns
    • H01Q13/0275—Ridged horns
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Definitions

  • the present invention mainly relates to a phased-array antenna device that receives microwaves.
  • a microwave radiometer is a radiometer that passively observes the intensity of extremely weak electromagnetic waves in a microwave range radiated from the ground surface for each frequency component.
  • An object radiates weak electromagnetic waves by blackbody radiation based on its temperature.
  • the microwave radiometer detects the intensity of weak electromagnetic waves based on the blackbody radiation using time integration.
  • Non-Patent Literature 1 The applicant operates an artificial satellite equipped with a microwave radiometer disclosed in Non-Patent Literature 1 to observe the temperature of the sea surface, the salinity concentration of seawater, measurement of soil moisture, and the like from the observed luminance temperature.
  • Patent Literature 1 discloses the technical details of an electronic scanning microwave radiometer that enables single-area scanning of the earth surface or the like at a conical and a predetermined fixed incident angle.
  • Non-Patent Literature 2 discloses the technical details related to a combination of numbers that reduces the redundancy of antenna elements of a phased array antenna.
  • Patent Literature 1 JP H7-209359 A ; US5874916
  • the microwave radiometer disclosed in Non-Patent Literature 1 and mounted on an artificial satellite currently in operation is equipped with a horn antenna for each of a plurality of frequency bands, and rotationally drives a disk-shaped reflecting mirror at a speed of one rotation every 1.5 seconds.
  • the rotating part including the reflecting mirror weighs about 250 kg.
  • the current microwave radiometer disclosed in Non-Patent Literature 1 has the following problems.
  • a purpose of the present invention is to provide a phased-array antenna device that solves the problems, has high spatial resolution, realizes microwave observation of a broad band and high frequency resolution, and has a long operating lifespan achieved without using a mechanically movable component.
  • a phased-array antenna device in the present invention includes a first antenna element, a first preamplifier that amplifies a signal obtained from the first antenna element, a first BPF that passes only a signal in a predetermined frequency band from an output signal of the first preamplifier, and a first A/D converter that converts an output signal of the first BPF into digital data.
  • the phased-array antenna device in the present invention includes a first FFT that performs a Fourier transform on data output from the first A/D converter, a second antenna element arranged apart from the first antenna element by a predetermined distance, a second preamplifier that amplifies a signal obtained from the second antenna element, and a second BPF that passes only a signal in the same frequency band as the first BPF from an output signal of the second preamplifier.
  • the phased-array antenna device in the present invention includes a second A/D converter that converts an output signal of the second BPF into digital data, a second FFT that performs a Fourier transform on data output from the second A/D converter, and a first cross-spectrum calculation unit that multiplies output data of the first FFT and output data of the second FFT for the same complex frequency component after converting one of the output data of the first FFT and the output data of the second FFT into a conjugate complex number.
  • the phased-array antenna device in the present invention includes a clock control unit that supplies a sampling clock whose output timing is relatively shifted to the first A/D converter and the second A/D converter.
  • phased-array antenna device that has high spatial resolution, realizes microwave observation of a broad band and high frequency resolution, and has a long operating lifespan achieved without using a mechanically movable component.
  • a phased array antenna that does not use a mechanically movable component disclosed in Patent Literature 1 is advantageous.
  • phased array antennas having the conventional structure cause signal processing circuits to be redundant. Therefore, the phased-array antenna device according to the embodiment of the present invention achieves a non-redundant phased-array antenna device with a minimum configuration of antenna elements and signal processing circuits by applying the technique disclosed in Non-Patent Literature 2.
  • a first-row second-column antenna element 103b corresponding to the first intersection is installed, spaced by the distance d.
  • the third-row first-column antenna element 103i and the fourth-row first-column antenna element 103m are spaced by the distance 2d in the longitudinal direction.
  • the fourth-row first-column antenna element 103m corresponding to the sixth intersection is installed, spaced by the distance 2d.
  • this combination of the antenna elements 103 of "0-1-4-6" is a combination with high circuit utilization efficiency for eliminating redundancy in the final addition processing of the phased-array antenna device 101, and this combination is also disclosed in Non-Patent Literature 2.
  • the spatial resolution of the antenna can be improved similarly to the diameter of the reflector of a parabola antenna.
  • the distance d is limited due to the convenience of equipment to be mounted.
  • the array antenna can receive a radio wave arriving from a desired narrow angular range with high sensitivity by installing the plurality of antenna elements 103 and superimposing received radio wave signals obtained from the respective antenna elements with a time difference. Conversely, at the time of transmission, the array antenna can transmit a radio wave in a desired narrow angular range with high output by giving a time difference to transmission radio wave signals output to the respective antenna elements.
  • the frequency bands of the antenna elements 103 may be different. At this time, the frequency bands receivable by the entire array antenna are frequency bands receivable by all the antenna elements.
  • a plurality of antenna elements 103 is provided on a straight line at equal intervals of a distance d, and the multiplication output of output signals of the antenna elements 103 or the multiplication output after integration is added. Then, this addition makes the directivity of the antenna sharper and reduces the side lobes.
  • Non-Patent Literature 2 in the phased-array antenna device 101 according to the embodiment of the present invention, the combination of the antenna elements 103 is developed on the longitudinal and lateral plane in order to sharpen the antenna directivity in the two longitudinal and lateral directions and to form a point-like antenna beam.
  • the combination of "0-1-4-6" is used in the phased-array antenna device 101 according to the embodiment of the present invention, but if more antenna elements 103 can be installed, it is possible to install the antenna elements 103 using the numerical sequence disclosed in Non-Patent Literature 2 similarly to the above example. For example, when five antenna elements 103 are installed, the spacing is set to "1-3-3-2", and the antenna elements 103 are arranged at "0-1-4-7-9". Then, the following combination is obtained.
  • Fig. 2 illustrates an external perspective view of the antenna element 103.
  • the antenna element 103 is a known quad-ridged feed horn antenna. Examples thereof include QH1400, QH4000, and the like manufactured by MVG Industries in France.
  • horn antenna elements 201 each having a shape warped in a longitudinal direction and a lateral direction when viewed from the top are formed.
  • the horn antenna elements 201 each having the warped shape achieve an extremely broad frequency band in the microwave range of the antenna element 103.
  • the front-end unit 104 is installed immediately below each antenna element 103.
  • the front-end unit 104 includes a preamplifier, a distributor, a band-pass filter, an A/D converter, and a register (see Fig. 3 ). That is, an analog signal obtained from each antenna element 103 is converted into digital data immediately below the antenna element 103.
  • the digital data obtained from the register is aggregated into a data processing unit 105 installed in the center part of the frame 102.
  • the data processing unit 105 is constituted by a known field-programmable gate array (FPGA).
  • the data processing unit 105 outputs radio-wave intensity data for each desired frequency component.
  • a clock control unit 106 is installed in the center part of the frame 102.
  • the clock control unit 106 supplies a sampling clock to the A/D converter inside the front-end unit 104 arranged immediately below each antenna element 103.
  • the front-end units 104 installed immediately below the respective antenna element 103 are all connected to the data processing unit 105 and the clock control unit 106.
  • Fig. 3 is a block diagram illustrating the overall configuration of the phased-array antenna device 101.
  • the first-row first-column antenna element 103a, the first-row first-column front-end unit 104a, and a first-row first-column FFT group 301a, which is a fast Fourier transform unit inside the data processing unit 105, constitute one system of signal processing and data processing.
  • first-row second-column antenna element 103b the first-row second-column front-end unit 104b, and a first-row second-column FFT group 301b constitute one system of signal processing and data processing.
  • first-row third-column antenna element 103c the first-row third-column front-end unit 104c, and a first-row third-column FFT group 301c constitute one system of signal processing and data processing, and the same applies subsequently.
  • the signal output from the first-row first-column antenna element 103a is amplified by a first-row first-column preamplifier 303a (denoted as "LNA” in Fig. 3 , and the same applies to Fig. 5 ).
  • the output signal of the first-row first-column preamplifier 303a is input to a first-row first-column BPF group 304a ("BPF" in Fig. 3 ), which is a band-pass filter group.
  • BPF first-row first-column BPF group 304a
  • Fig. 3 illustrates a single BPF, a plurality of BPFs is provided for each frequency band as described later with reference to Fig. 5 .
  • the data obtained from the first-row first-column antenna element 103a and the data obtained from the first-row second-column antenna element 103b are supplied to the first cross-spectrum calculation unit group 302a.
  • the data obtained from the first-row third-column antenna element 103c and the data obtained from the first-row fourth-column antenna element 103d are supplied to the second cross-spectrum calculation unit group 302b.
  • the data obtained from the first-row second-column antenna element 103b and the data obtained from the first-row third-column antenna element 103c are supplied to the third cross-spectrum calculation unit group 302c.
  • the data obtained from the first-row first-column antenna element 103a and the data obtained from the first-row third-column antenna element 103c are supplied to the fourth cross-spectrum calculation unit group 302d.
  • the data obtained from the first-row second-column antenna element 103b and the data obtained from the first-row fourth-column antenna element 103d are supplied to a fifth cross-spectrum calculation unit group 302e.
  • the data obtained from the first-row first-column antenna element 103a and the data obtained from the first-row fourth-column antenna element 103d are supplied to a sixth cross-spectrum calculation unit group 302f.
  • the six cross-spectrum calculation unit groups 302 that process signals of the second-row first-column antenna element 103e to the second-row fourth-column antenna element 103h are defined as a second cross-spectrum calculation group 401b.
  • the six cross-spectrum calculation unit groups 302 that process signals of the third-row first-column antenna element 103i to the third-row fourth-column antenna element 103l are defined as a third cross-spectrum calculation group 401c.
  • the six cross-spectrum calculation unit groups 302 that process signals of the fourth-row first-column antenna element 103m to the fourth-row fourth-column antenna element 103p are defined as a fourth cross-spectrum calculation group 401d.
  • cross-spectrum calculation unit groups 302 are defined as a cross-spectrum calculation group 402.
  • the details of the cross-spectrum calculation group 402 are the same as those of the cross-spectrum calculation group 401.
  • the six cross-spectrum calculation unit groups 302 that process signals of the first-row first-column antenna element 103a, the second-row first-column antenna element 103e, the third-row first-column antenna element 103i, and the fourth-row first-column antenna element 103m are defined as a fifth cross-spectrum calculation group 402a.
  • the six cross-spectrum calculation unit groups 302 that process signals of the first-row second-column antenna element 103b, the second-row second-column antenna element 103f, the third-row second-column antenna element 103j, and the fourth-row second-column antenna element 103n are defined as a sixth cross-spectrum calculation group 402b.
  • the six cross-spectrum calculation unit groups 302 that process signals of the first-row third-column antenna element 103c, the second-row third-column antenna element 103g, the third-row third-column antenna element 103k, and the fourth-row third-column antenna element 103o are defined as a sixth cross-spectrum calculation group 402c.
  • the six cross-spectrum calculation unit groups 302 that process signals of the first-row fourth-column antenna element 103d, the second-row fourth-column antenna element 103h, the third-row fourth-column antenna element 103l, and the fourth-row fourth-column antenna element 103p are defined as a sixth cross-spectrum calculation group 402d.
  • the cross-spectrum component data for each complex frequency output from each cross-spectrum calculation unit group 302 is input to the addition unit 307.
  • the addition unit 307 performs addition processing of the cross-spectrum component data for each predetermined frequency range.
  • the cross-spectrum component data is complex number data and includes a real part and an imaginary part.
  • the addition unit 307 performs addition processing on the complex number data for each of the same time and the same complex frequency component.
  • output data of a large number of cross-spectrum calculation unit groups 302 is aggregated into complex number data for one system.
  • the output data of the addition unit 307 is input to an integration unit 308.
  • the integration unit 308 performs integration processing on 16 ⁇ 10 6 pieces of complex frequency data existing on the time axis of 1 second for each complex frequency component. Eventually, the complex frequency component data of the FFT group 301 for a 1-second measurement is output from the integration unit 308.
  • a conventional phased array antenna which is constituted only by analog signal processing, uses delay lines for delay processing. This is literally a plurality of conducting wires of different lengths, and delay lines of different lengths are selected by a switch according to a time to be delayed. Such delay lines are difficult to create large delays.
  • phased-array antenna device 101 uses a relative timing difference of sample clocks for delay. Therefore, it is possible to set a large delay time.
  • Fig. 5 is a block diagram illustrating a functional configuration of one system of the phased-array antenna device 101.
  • Fig. 6A is a schematic diagram conceptually illustrating an analog signal output from the preamplifier 303.
  • Fig. 6B is a schematic diagram conceptually illustrating digital data obtained from an A/D converter 503.
  • Fig. 6C is a schematic diagram conceptually illustrating complex frequency data obtained from an FFT 505.
  • Fig. 6D is a schematic diagram conceptually illustrating the calculation of a cross-spectrum calculation unit 506.
  • a third BPF 502c (abbreviated as "BPF3" in Fig. 5 ), which is a third band-pass filter belonging to a third subsystem, passes a radio wave in a third band of 16384 to 24576 MHz.
  • the functional blocks connected to the output side of each of the first BPF 502a, the second BPF 502b, the third BPF 502c, and the fourth BPF 502d are the same circuit functional blocks in each subsystems.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radar Systems Or Details Thereof (AREA)

Claims (5)

  1. Phased-Array-Antennenvorrichtung (101), die Folgendes umfasst:
    ein erstes Antennenelement (103a), wobei die Phased-Array-Antennenvorrichtung (101) ferner umfasst:
    einen ersten Vorverstärker (303a), der so konfiguriert ist, dass er ein von dem ersten Antennenelement erhaltenes Signal verstärkt;
    einen ersten Bandpassfilter BPF (304a), der so konfiguriert ist, dass er nur ein Signal in einem vorgegebenen Frequenzband von einem Ausgangssignal des ersten Vorverstärkers (303a) durchlässt;
    einen ersten Analog-Digital-A/D-Wandler (305a), der so konfiguriert ist, dass er ein Ausgangssignal des ersten BPF in digitale Daten umwandelt;
    eine erste FFT (301a), die so konfiguriert ist, dass sie eine Fourier-Transformation der vom ersten A/D-Wandler ausgegebenen Daten durchführt;
    ein zweites Antennenelement (103b), das in einem vorgegebenen Abstand zum ersten Antennenelement angeordnet ist;
    einen zweiten Vorverstärker (303b), der ein von dem zweiten Antennenelement erhaltenes Signal verstärkt;
    einen zweiten BPF (304b), der so konfiguriert ist, dass er nur ein Signal im gleichen Frequenzband wie der erste BPF von einem Ausgangssignal des zweiten Vorverstärkers durchlässt;
    einen zweiten A/D-Wandler (305b), der so konfiguriert ist, dass er ein Ausgangssignal des zweiten BPF in digitale Daten umwandelt;
    eine zweite FFT (301b), die so konfiguriert ist, dass sie eine Fourier-Transformation der vom zweiten A/D-Wandler ausgegebenen Daten durchführt
    eine erste Kreuzspektrum-Berechnungseinheit (302a), die so konfiguriert ist, dass sie Ausgabedaten der ersten FFT (301a) und Ausgabedaten der zweiten FFT (301b) für dieselbe komplexe Frequenzkomponente multipliziert, nachdem sie entweder die Ausgabedaten der ersten FFT oder die Ausgabedaten der zweiten FFT in eine konjugiert komplexe Zahl umgewandelt hat; und
    eine Taktsteuereinheit (106), die so konfiguriert ist, dass sie einen Abtasttakt liefert, dessen Ausgabezeitpunkt relativ zu dem ersten und zweiten A/D-Wandler verschoben ist.
  2. Phased-Array-Antennenvorrichtung (101) nach Anspruch 1, ferner umfassend:
    ein drittes Antennenelement (103c), das in einer geraden Linie angeordnet ist, auf der das erste Antennenelement (103a) und das zweite Antennenelement (103b) angeordnet sind, und das von dem zweiten Antennenelement um einen Abstand beabstandet ist, der ein natürliches Vielfaches eines Abstands zwischen dem ersten Antennenelement und dem zweiten Antennenelement ist;
    einen dritten Vorverstärker (303c), der so konfiguriert ist, dass er ein von dem dritten Antennenelement (103c) erhaltenes Signal verstärkt;
    einen dritten BPF (304c), der so konfiguriert ist, dass er nur ein Signal im gleichen Frequenzband wie der erste BPF von einem Ausgangssignal des dritten Vorverstärkers durchlässt;
    einen dritten A/D-Wandler (305c), der so konfiguriert ist, dass er ein Ausgangssignal des dritten BPF in digitale Daten umwandelt;
    eine dritte FFT (301c), die so konfiguriert ist, dass sie eine Fourier-Transformation der vom dritten A/D-Wandler ausgegebenen Daten durchführt;
    eine zweite Einheit zur Berechnung des Kreuzspektrums (302c), die so konfiguriert ist, dass sie die Ausgabedaten der ersten FFT und die Ausgabedaten der dritten FFT für dieselbe komplexe Frequenzkomponente multipliziert, nachdem sie entweder die Ausgabedaten der ersten FFT oder die Ausgabedaten der dritten FFT in eine konjugiert komplexe Zahl umgewandelt hat; und
    eine dritte Kreuzspektrum-Berechnungseinheit (302b), die so konfiguriert ist, dass sie die Ausgabedaten der zweiten FFT und die Ausgabedaten der dritten FFT für dieselbe komplexe Frequenzkomponente multipliziert, nachdem sie entweder die Ausgabedaten der zweiten FFT oder die Ausgabedaten der dritten FFT in eine konjugiert komplexe Zahl umgewandelt hat, wobei
    die Taktsteuereinheit (106) so konfiguriert ist, dass sie auf der Grundlage des gewünschten Azimuts einen Abtasttakt liefert, dessen Ausgabezeitpunkt relativ zu dem ersten A/D-Wandler, dem zweiten A/D-Wandler und dem dritten A/D-Wandler verschoben ist.
  3. Phased-Array-Antennenvorrichtung (101) nach Anspruch 2, ferner umfassend:
    ein viertes Antennenelement (103e), das in einer geraden Linie orthogonal zu der geraden Linie, auf der das erste Antennenelement (103a) und das zweite Antennenelement (103b) angeordnet sind, und in einer geraden Linie, die das erste Antennenelement schneidet, angeordnet ist und von dem ersten Antennenelement um einen Abstand beabstandet ist, der ein natürliches Vielfaches eines Abstands zwischen dem ersten Antennenelement und dem zweiten Antennenelement ist;
    einen vierten Vorverstärker, der so konfiguriert ist, dass er ein von dem vierten Antennenelement erhaltenes Signal verstärkt;
    einen vierten BPF, der so konfiguriert ist, dass er nur ein Signal im gleichen Frequenzband wie der erste BPF von einem Ausgangssignal des vierten Vorverstärkers durchlässt;
    einen vierten A/D-Wandler, der so konfiguriert ist, dass er ein Ausgangssignal des vierten BPF in digitale Daten umwandelt;
    eine vierte FFT, die so konfiguriert ist, dass sie eine Fourier-Transformation der vom vierten A/D-Wandler ausgegebenen Daten durchführt; und
    eine vierte Kreuzspektrum-Berechnungseinheit, die so konfiguriert ist, dass sie die Ausgabedaten der ersten FFT und die Ausgabedaten der vierten FFT für die gleiche komplexe Frequenzkomponente multipliziert, nachdem sie entweder die Ausgabedaten der ersten FFT oder die Ausgabedaten der vierten FFT in eine konjugiert komplexe Zahl umgewandelt hat, wobei
    die Taktsteuereinheit (106) so konfiguriert ist, dass sie auf der Grundlage des gewünschten Azimuts einen Abtasttakt liefert, dessen Ausgabezeitpunkt relativ zu dem ersten A/D-Wandler und dem vierten A/D-Wandler verschoben ist.
  4. Phased-Array-Antennenvorrichtung (101) nach Anspruch 3, ferner umfassend:
    einen zweiten ersten BPF, der so konfiguriert ist, dass er von einem Ausgangssignal des ersten Vorverstärkers nur ein Signal in einem vorbestimmten Frequenzband durchlässt, das sich vom ersten BPF unterscheidet;
    einen zweiten ersten A/D-Wandler, der so konfiguriert ist, dass er ein Ausgangssignal des ersten BPF in digitale Daten umwandelt;
    eine zweite erste FFT, die so konfiguriert ist, dass sie eine Fourier-Transformation der vom zweiten ersten A/D-Wandler ausgegebenen Daten durchführt;
    einen zweiten econd BPF, der so konfiguriert ist, dass er nur ein Signal im gleichen Frequenzband wie der zweite erste BPF von einem Ausgangssignal des zweiten Vorverstärkers durchlässt;
    einen zweiten zweiten A/D-Wandler, der so konfiguriert ist, dass er ein Ausgangssignal des zweiten BPF in digitale Daten umwandelt;
    eine zweite FFT, die so konfiguriert ist, dass sie eine Fourier-Transformation der vom zweiten A/D-Wandler ausgegebenen Daten durchführt; und
    eine zweite erste Kreuzspektrum-Berechnungseinheit, die so konfiguriert ist, dass sie Ausgabedaten der zweiten ersten FFT und Ausgabedaten der zweiten zweiten FFT für die gleiche komplexe Frequenzkomponente multipliziert, nachdem sie entweder die Ausgabedaten der zweiten ersten FFT oder die Ausgabedaten der zweiten zweiten FFT in eine konjugiert komplexe Zahl umgewandelt hat, wobei
    die Taktsteuereinheit (106) so konfiguriert ist, dass sie denselben Abtasttakt wie der erste A/D-Wandler an den zweiten ersten A/D-Wandler und denselben Abtasttakt wie der zweite A/D-Wandler an den zweiten zweiten A/D-Wandler liefert.
  5. Phased-Array-Antennenvorrichtung (101) nach Anspruch 4, wobei
    die Taktsteuerungseinheit so konfiguriert ist, dass sie einen Abtasttakt mit einer Frequenz eines ganzzahligen Vielfachen der Zahl einer Zweierpotenz erzeugt.
EP20899133.1A 2019-12-12 2020-06-04 Phasengesteuerte antennenvorrichtung Active EP4075152B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019224449A JP6721226B1 (ja) 2019-12-12 2019-12-12 フェーズドアレイアンテナ装置
PCT/JP2020/022185 WO2021117269A1 (ja) 2019-12-12 2020-06-04 フェーズドアレイアンテナ装置

Publications (3)

Publication Number Publication Date
EP4075152A1 EP4075152A1 (de) 2022-10-19
EP4075152A4 EP4075152A4 (de) 2024-01-24
EP4075152B1 true EP4075152B1 (de) 2025-06-25

Family

ID=71402443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20899133.1A Active EP4075152B1 (de) 2019-12-12 2020-06-04 Phasengesteuerte antennenvorrichtung

Country Status (4)

Country Link
US (1) US12160050B2 (de)
EP (1) EP4075152B1 (de)
JP (1) JP6721226B1 (de)
WO (1) WO2021117269A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7493193B1 (ja) 2023-06-26 2024-05-31 国立研究開発法人宇宙航空研究開発機構 フェーズドアレイアンテナ装置
CN117276899B (zh) * 2023-11-17 2024-02-23 中国科学院空天信息创新研究院 相控阵天线和无线电通信装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4990925A (en) * 1984-05-07 1991-02-05 Hughes Aircraft Company Interferometric radiometer
JPH0251074A (ja) 1988-08-12 1990-02-21 Natl Space Dev Agency Japan<Nasda> 高空間分解能マイクロ波放射計
JPH07209359A (ja) 1994-01-10 1995-08-11 Mitsubishi Electric Corp 電子走査型マイクロ波放射計
JP3642844B2 (ja) * 1995-11-08 2005-04-27 株式会社アドバンテスト 波源像可視化方法及び装置
US5874916A (en) * 1996-01-25 1999-02-23 Lockheed Martin Corporation Frequency selective TDOA/FDOA cross-correlation
JPH09211045A (ja) 1996-02-02 1997-08-15 Mitsubishi Electric Corp 検波装置
JP2007303855A (ja) * 2006-05-09 2007-11-22 Ｓｙｓｔｅｍ Ｂｏｘ Ｊａｐａｎ株式会社 地球情報分析システム
DE102018202289A1 (de) * 2018-02-15 2019-08-22 Robert Bosch Gmbh Winkelauflösender breitbandiger Radarsensor für Kraftfahrzeuge
CN110448810A (zh) 2018-05-08 2019-11-15 河北亿邦医疗设备股份有限公司 一种微波辐射器阵列

Also Published As

Publication number Publication date
JP6721226B1 (ja) 2020-07-08
JP2021093679A (ja) 2021-06-17
US20230045598A1 (en) 2023-02-09
EP4075152A1 (de) 2022-10-19
US12160050B2 (en) 2024-12-03
WO2021117269A1 (ja) 2021-06-17
EP4075152A4 (de) 2024-01-24

Similar Documents

Publication Publication Date Title
US9070972B2 (en) Wideband beam forming device; wideband beam steering device and corresponding methods
CN111273267B (zh) 基于相控阵非相干散射雷达的信号处理方法、系统、装置
CN113325417B (zh) 一种毫米波和太赫兹多频段雷达探测成像系统及方法
EP4075152B1 (de) Phasengesteuerte antennenvorrichtung
CN108828546B (zh) 一种天基多通道动目标雷达接收处理系统及方法
Singer et al. A new narrow beam Doppler radar at 3 MHz for studies of the high-latitude middle atmosphere
Burnett et al. Design and development of a wide-field fully cryogenic phased array feed for Arecibo
Chippendale et al. Measured aperture-array noise temperature of the Mark II phased array feed for ASKAP
Yan et al. The digital beam forming technique in AgileDARN high-frequency radar
Fromenteze et al. A precorrection method for passive UWB time-reversal beamformer
Benthem et al. EMBRACE: Results from an aperture array for radio astronomy
Veidt et al. The DRAO phased array feed demonstrator: Recent results
Rincon et al. Development of NASA'S Next Generation L-Band Digital Beamforming Synthetic Aperture Radar (DBSAR-2)
RU2732803C1 (ru) Способ цифрового формирования диаграммы направленности активной фазированной антенной решётки при излучении и приеме линейно-частотно-модулированных сигналов
Stanislavsky et al. Low‐frequency heliographic observations of the quiet Sun corona
Liu et al. IMI (Interferometric microwave imager): AL/S/C tri-frequency radiometer for water cycle observation mission (WCOM)
Alistarh et al. Spectral smoothing by multiple radar pattern multiplication for improved accuracy
McKay et al. All-sky interferometric riometry
Imbriale et al. The design and performance of a wideband radio telescope for the GAVRT program
Liu et al. Phased Array Feed Experiments and Galactic H i Observations
Xue et al. Development of the disk antenna array aperture synthesis millimeter wave radiometer
Cassanelli Fast Radio Burst Localization with Very Long Baseline Interferometry
Christensen et al. The geostationary atmospheric sounder (GAS)
Wu et al. Phased Array Feed Experiments and Galactic HI Observations
Naji et al. Interference Mitigation Strategies For Low-Frequency Radio Astronomy In Space-Based Observatories

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220712

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
RIC1 Information provided on ipc code assigned before grant

Ipc: G01S 7/02 20060101ALI20231212BHEP

Ipc: H01Q 3/26 20060101ALI20231212BHEP

Ipc: G01R 29/08 20060101AFI20231212BHEP

A4 Supplementary search report drawn up and despatched

Effective date: 20231222

RIC1 Information provided on ipc code assigned before grant

Ipc: G01S 7/02 20060101ALI20231218BHEP

Ipc: H01Q 3/26 20060101ALI20231218BHEP

Ipc: G01R 29/08 20060101AFI20231218BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20241210

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTC Intention to grant announced (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

INTG Intention to grant announced

Effective date: 20250502

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602020053538

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250625

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250925

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250926

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250925

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20251027

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1806973

Country of ref document: AT

Kind code of ref document: T

Effective date: 20250625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20251025

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250625

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250625

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT